Suppose that the quarterly sales levels among health care information systems companies are approximately normally distributed with a mean of 12 million dollars and a standard deviation of 1.3 million dollars. One health care information systems company considers a quarter a "failure" if its sales level that quarter is in the bottom 20% of all quarterly sales levels. Determine the sales level (in millions of dollars) that is the cutoff between quarters that are considered "failures" by that company and quarters that are not. Carry your intermediate computations to at least four decimal places. Round your answer to one decimal place. million dollars

Suppose that the life-span of goldfish can be modeled by the Normal Distribution with a mean of 5 years and a standard deviation of 2.3 years. What is the life span of the 90th percentile of goldfish? Interpret this value. The 90th percentile is 7.95 years. This means that 90% of goldfish will have lifespans less than or equal to 7.95 years. The 90th percentile is 2.05 years. This means that 90% of goldfish will have lifespans greater than or equal to 2.05 years. The 90th percentile is 2.05 years. This means that 90% of goldfish will have lifespans less than or equal to 2.05 years. O The 90th percentile is 7.95 years. This means that 90% of goldfish will have lifespans greater than or equal to 7.95 years.

Suppose that the quarterly sales levels among health care information systems companies are approximately normally distributed with a mean of 11 million dollars and a standard deviation of 1.4 million dollars. One health care information systems company considers a quarter a "failure" if its sales level that quarter is in the bottom 10% of all quarterly sales levels. Determine the sales level (in millions of dollars) that is the cutoff between quarters that are considered "failures" by that company and quarters that are not. Carry your intermediate computations to at least four decimal places. Round your answer to one decimal place.

Suppose the scores of students on a Statistics course are Normally distributed with a mean of 440 and a standard deviation of 31.What percentage of the students scored between 440 and 502 on the exam? (Give your answer to 3 significant figures.) percent.